High-speed storage equipment based on NAND flash memory and file management method

Abstract

The invention belongs to the technical field of file management and discloses high-speed storage equipment based on an NAND flash memory and a file management method.The method includes the steps that multiple block storage spaces of an NAND chip set are sequentially divided into six parts which include a bad block information list, a block use information list, a file information list, reserved blocks, file data blocks and mapping blocks; the bad block information list is acquired, and bad blocks are shielded during file management; the block use information list is acquired, and the use condition of each block is acquired; the file information list is acquired, and the number of files stored in the NAND chip set and corresponding storage positions are acquired; file operation commands are acquired, and file write operation or file red operation or file deletion operation is conducted on the corresponding storage spaces of the file data blocks according to the file operation commands; the content of the block use information list and the content of the file information list are updated.The problems that when an existing file management system is used for high-speed storage equipment, the speed is decreased, and the space utilization rate is low are solved.

Description

technical field [0001] The invention relates to the technical field of file management, in particular to a high-speed storage device based on NAND flash memory and a file management method, which are used for managing large files in an embedded high-speed real-time storage device. Background technique [0002] With the rapid development of modern science and technology, the importance of high-speed storage devices has become increasingly prominent, and has been widely used in key fields such as military, communication and medical equipment, such as radar real-time imaging systems, large-capacity real-time data transmission of communication base stations and nuclear magnetic resonance images real-time processing, etc. But the existing file system is not suitable for direct use in high-speed storage devices. [0003] NAND flash memory is a kind of FLASH memory. It reads and writes data in units of pages and erases data in units of blocks. It uses a non-linear macro-cell mode ...

AI Technical Summary

Problems solved by technology

[0009] In view of the above problems, the object of the present invention is to provide a high-speed storage device and file management method based on NAND flash memory, which solves the problems of reduced speed and low space utilization when the existing file management system is used for high-speed storage devices

Images